/* Custom styles for Dash Course Platform */

:root {
    --primary-color: #1e293b;
    --secondary-color: #5e7eab;
}

/* Remove body margins */
body {
    margin: 0;
    padding: 0;
    background-color: #f2f5fa;
}

.text-sm {
    font-size: 0.9rem;
}

.main-content {
    /*width: 100%;
    min-width: 600px;
    max-width: 1050px;
    margin-left: auto;*/
    padding: 0.5rem;
    margin-bottom: 50px;
}

/* Card styling */
.card {
    border-radius: 12px;
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card.shadow {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Sidebar styling */
.sidebar-content {
    width: 350px;
    margin-bottom: 50px;
}

/* Mobile sidebar toggle button */
#sidebar_mobile_toggle {
    display: block;
    margin: 1rem auto;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

#sidebar_mobile_toggle:hover {
    background-color: var(--secondary-color);
    color: white;
}

.nav-pills .nav-link {
    font-size: 0.875rem;
    border-radius: 8px;
    margin-bottom: 4px;
    transition: all 0.2s ease;
}

.nav-pills .nav-link:hover {
    background-color: #e9ecef;
    transform: translateX(4px);
}

.nav-pills .nav-link.active {
    background-color: var(--secondary-color);
    color: white;
}

/* Header styling */
.header-menu {
    background-color: var(--primary-color) !important;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    background-color: var(--primary-color) !important;
}

.navbar a {
    margin: 0 0.5rem;
    color: #fff !important;
    border-radius: 8px;
}

.navbar a:not(.navbar-brand):hover {
    background-color: #fff !important;
    color: var(--primary-color) !important;
    border-radius: 8px;
}

/* Hamburger menu styles */
.navbar-toggler {
    border: none;
    padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Main content area */
.main-content {
    min-height: calc(100vh - 100px);
}

/* Course preview and lock overlay */
.lock-overlay {
    padding: 3rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.98) 100%);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.buy-course-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    border: none;
    border-radius: 50px;
    padding: 12px 32px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.buy-course-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.4);
    background: linear-gradient(135deg, #218838 0%, #1ea085 100%);
}

@media (max-width: 992px) {
    /* Mobile navigation adjustments */
    .navbar-nav {
        text-align: center;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        border-radius: 8px;
        margin: 0.25rem 0;
    }
    
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .col-md-8 {
        margin-bottom: 20px;
    }
    
    .lock-overlay {
        padding: 20px;
    }
    
    .buy-course-btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }
    
    /* Adjust main content for mobile */
    .main-content {
        padding: 0.25rem;
        margin-bottom: 80px; /* Extra space for mobile toggle button */
    }
    
    /* Mobile container adjustments */
    .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    /* Mobile card adjustments */
    .card {
        border-radius: 8px;
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}

/* Extra small devices */
@media (max-width: 576px) {
    .main-content {
        padding: 0.125rem;
    }
    
    .lock-overlay {
        padding: 1rem;
        margin: 0.5rem;
    }
    
    .buy-course-btn {
        padding: 8px 20px;
        font-size: 0.8rem;
    }
    
    /* #sidebar_mobile_offcanvas {
        width: 95% !important;
    } */
}

/* Link styling */
.nav-link {
    color: var(--primary-color);
    text-decoration: none;
}

.nav-link:hover {
    color: var(--secondary-color);
}

/* Section headers */
.section-header {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.section-description {
    color: #6c757d;
    font-size: 0.875rem;
    margin: 1rem 0;
} 

/* Markdown styling */
.markdown-content {
    line-height: 1.6;
    color: #333;
    font-size: 1rem;
}

/* Breadcrumb styling */
.breadcrumb-item a {
    color: var(--secondary-color);
    text-decoration: none !important;
    border-bottom: 1px solid transparent !important;
    transition: all 0.2s ease !important;
}

.breadcrumb-item a:hover {
    color: var(--primary-color) !important;
    text-decoration: none !important;
    border-bottom: 1px solid var(--primary-color) !important;
}


/* Navigation Buttons Styling */
.navigation-btn {
    border-radius: 0 !important;
    font-weight: 600 !important;
    padding: 0.5rem 1.rem !important;
    border-width: 2px !important;
    transition: all 0.3s ease !important;
    min-width: 180px !important;
    text-transform: uppercase !important;
    letter-spacing: 0.025em !important;
}

.navigation-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

.navigation-btn-prev {
    background-color: transparent !important;
    border-color: var(--secondary-color) !important;
    color: var(--secondary-color) !important;
}

.navigation-btn-prev:hover:not(:disabled) {
    background-color: var(--secondary-color) !important;
    border-color: var(--secondary-color) !important;
    color: white !important;
}

.navigation-btn-prev:disabled {
    border-color: #dee2e6 !important;
    color: #6c757d !important;
    background-color: transparent !important;
}

.navigation-btn-next {
    background-color: var(--secondary-color) !important;
    border-color: var(--secondary-color) !important;
    color: white !important;
}

.navigation-btn-next:hover:not(:disabled) {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: white !important;
}

.navigation-btn-next:disabled {
    background-color: #dee2e6 !important;
    border-color: #dee2e6 !important;
    color: #6c757d !important;
}

/* Navigation Container Styling */
.navigation-container {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 0;
    padding: 2rem 0.5rem 1.5rem 0.5rem;
    margin-top: 4rem;
}

.navigation-container .lesson-checkbox {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.navigation-container .lesson-checkbox .form-check-input {
    margin-right: 0.5rem;
    transform: scale(1.2);
    accent-color: var(--secondary-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.navigation-container .lesson-checkbox .form-check-input:hover {
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(94, 126, 171, 0.3);
}

.navigation-container .lesson-checkbox .form-check-input:checked {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    animation: checkmark-bounce 0.4s ease-in-out;
}

@keyframes checkmark-bounce {
    0% { transform: scale(1.2); }
    50% { transform: scale(1.4); }
    100% { transform: scale(1.2); }
}

.navigation-container .lesson-checkbox .form-check-label {
    font-weight: 500;
    color: var(--primary-color);
    cursor: pointer;
    transition: color 0.2s ease;
}

.navigation-container .lesson-checkbox .form-check-label:hover {
    color: var(--secondary-color);
}

/* Mobile navigation button adjustments */
@media (max-width: 768px) {
    .navigation-btn {
        min-width: 140px !important;
        padding: 0.4rem 0.8rem !important;
        font-size: 0.8rem !important;
    }
    
    .navigation-container {
        padding: 1rem 0.25rem 1rem 0.25rem;
        margin-top: 2rem;
    }
}

@media (max-width: 576px) {
    .navigation-btn {
        min-width: 120px !important;
        padding: 0.3rem 0.6rem !important;
        font-size: 0.75rem !important;
    }
    
    .navigation-container {
        padding: 0.75rem 0.125rem 0.75rem 0.125rem;
    }
}


/***************************************************************/

/* Headings */
.markdown-content h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 2.5rem 0 1.5rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #e9ecef;
    line-height: 1.2;
}

.markdown-content h2 {
    font-size: 1.875rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 2rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e9ecef;
    line-height: 1.3;
}

.markdown-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 1.75rem 0 0.75rem 0;
    line-height: 1.4;
}

.markdown-content h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 1.5rem 0 0.5rem 0;
    line-height: 1.4;
}

.markdown-content h5 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 1.25rem 0 0.5rem 0;
    line-height: 1.4;
}

.markdown-content h6 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 1rem 0 0.5rem 0;
    line-height: 1.4;
}

/* Paragraphs */
.markdown-content p {
    margin: 1rem 0;
    line-height: 1.7;
    color: #4a5568;
}

/* Lists */
.markdown-content ul,
.markdown-content ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.markdown-content li {
    margin: 0.5rem 0;
    line-height: 1.6;
    color: #4a5568;
}

.markdown-content ul li {
    list-style-type: disc;
}

.markdown-content ol li {
    list-style-type: decimal;
}

/* Nested lists */
.markdown-content ul ul,
.markdown-content ol ol,
.markdown-content ul ol,
.markdown-content ol ul {
    margin: 0.5rem 0;
}

/* Links */
.markdown-content a, a {
    color: var(--secondary-color);
    text-decoration: underline;
    /* border-bottom: 1px solid transparent; */
    transition: all 0.2s ease;
}

.markdown-content a:hover, a:hover {
    color: var(--primary-color);
    /* border-bottom-color: var(--primary-color); */
}

/* Code blocks */
.markdown-content pre {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.5;
}

.markdown-content code {
    background-color: #f1f3f4;
    color: #d73a49;
    padding: 0.125rem 0.25rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.markdown-content pre code {
    background-color: transparent;
    color: inherit;
    padding: 0;
    border-radius: 0;
}

/* Blockquotes */
.markdown-content blockquote {
    border-left: 4px solid var(--secondary-color);
    background-color: #f8f9fa;
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: #6c757d;
}

.markdown-content blockquote p {
    margin: 0;
}

/* Tables */
.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.875rem;
}

.markdown-content th,
.markdown-content td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.markdown-content th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: var(--primary-color);
}

.markdown-content tr:hover {
    background-color: #f8f9fa;
}

/* Horizontal rules */
.markdown-content hr {
    border: none;
    border-top: 2px solid #e9ecef;
    margin: 2rem 0;
}

/* Images */
.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.markdown-content figure {
    text-align: center;
}

.markdown-content figcaption {
    font-size: 0.875rem;
}

/* Strong and emphasis */
.markdown-content strong {
    font-weight: 600;
    color: var(--primary-color);
}

.markdown-content em {
    font-style: italic;
    color: #6c757d;
}

/* First heading should have less top margin */
.markdown-content h1:first-child,
.markdown-content h2:first-child,
.markdown-content h3:first-child,
.markdown-content h4:first-child,
.markdown-content h5:first-child,
.markdown-content h6:first-child {
    margin-top: 0;
}

/* Responsive adjustments for markdown content */
@media (max-width: 768px) {
    .markdown-content h1 {
        font-size: 1.875rem;
        margin: 2rem 0 1rem 0;
    }
    
    .markdown-content h2 {
        font-size: 1.5rem;
        margin: 1.5rem 0 0.75rem 0;
    }
    
    .markdown-content h3 {
        font-size: 1.25rem;
        margin: 1.25rem 0 0.5rem 0;
    }
    
    .markdown-content p {
        margin: 0.75rem 0;
    }
    
    .markdown-content ul,
    .markdown-content ol {
        margin: 0.75rem 0;
        padding-left: 1.25rem;
    }
    
    .markdown-content pre {
        padding: 0.75rem;
        font-size: 0.8rem;
    }
    
    .markdown-content table {
        font-size: 0.8rem;
    }
    
    .markdown-content th,
    .markdown-content td {
        padding: 0.5rem;
    }
}

@media (max-width: 576px) {
    .markdown-content h1 {
        font-size: 1.5rem;
        margin: 1.5rem 0 0.75rem 0;
    }
    
    .markdown-content h2 {
        font-size: 1.25rem;
        margin: 1.25rem 0 0.5rem 0;
    }
    
    .markdown-content h3 {
        font-size: 1.125rem;
        margin: 1rem 0 0.5rem 0;
    }
    
    .markdown-content p {
        margin: 0.5rem 0;
    }
    
    .markdown-content ul,
    .markdown-content ol {
        margin: 0.5rem 0;
        padding-left: 1rem;
    }
    
    .markdown-content pre {
        padding: 0.5rem;
        font-size: 0.75rem;
    }
    
    .markdown-content table {
        font-size: 0.75rem;
    }
    
    .markdown-content th,
    .markdown-content td {
        padding: 0.25rem;
    }
    
    .markdown-content blockquote {
        padding: 0.75rem 1rem;
        margin: 1rem 0;
    }
}


/* Video Styling */
.lesson_video {
    width: 100%;
    height: auto;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .lesson_video {
        border-radius: 8px;
        margin-bottom: 1rem;
    }
}